A jug band is a band employing a jug player and a mix of conventional and homemade instruments. These homemade instruments are ordinary objects adapted to or modified for making sound, like the washtub bass, washboard, spoons, bones, stovepipe, and comb and tissue paper (kazoo). The term jug band is loosely used in referring to ensembles that also incorporate homemade instruments but that are more accurately called skiffle bands, spasm bands, or juke (or jook) bands (see juke joint) because they do not include a jug player.
In the early days of jug band music, homemade guitars and mandolins were sometimes made from the necks of discarded manufactured guitars fastened to large gourds that were flattened on one side, with a sound-hole cut into the flat side, before drying. Banjos were sometimes made from a discarded guitar neck and a metal pie plate.
The jug sound is made by taking a jug (usually made of glass or stoneware) and buzzing the lips into its mouth from about an inch away. As with brass instruments, changes in pitch are controlled by altering lip tension, and an accomplished jug player could have a two-octave range. The stovepipe (usually a section of tin pipe, three of four inches in diameter) is played in much the same manner, with the pipe rather than the jug serving as the resonating chamber. There is some similarity to the didgeridoo, but there is no contact between the stovepipe and the player's lips. Some jug and stovepipe players utilize throat vocalization along with lip buzzing, as with the didgeridoo.
The swooping sounds of the jug fill a musical role halfway between the trombone and sousaphone or tuba in Dixieland bands, playing mid- and lower-range harmonies in rhythm.